GW Instek GDM-8261 User Manual - Manual (Page 28)

GDM-8261 User Manual
28
Select Voltage Range
Auto range To turn the automatic range selection
On/Off, press the AUTO key.
AUTO
Manual range Press the Up or the Down key to select
the range. The AUTO indicator turns
Off automatically. If the appropriate
range is unknown, select the highest
range.
Selection list Range Resolution Full scale @ slow rate
100mV 0.1µV 119.9999mV
1V 1µV 1.199999V
10V 10µV 11.99999V
100V 100µV 119.9999V
750V (AC) 1mV 750.000V
1000V (DC) 1mV 1000.000V
Note: For more detailed parameters, see the
specifications on page 212.
DC Voltage
Range Note: DC voltages with AC components cannot be accurately
measured if the DC+AC component exceed the ADC
dynamic range for the selected DC range. Any voltage
exceeding the ADC dynamic range will be clipped at the
upper/lower range limit. Under these conditions the range
that is chosen with the Auto range function may be too
small.
Example:
A
+2V
0V
-2V
C D
B
E
DC 1V Range
A,B: Input exceeds the ADC
dynamic range.
C,D: The DCV offset causes
the input to exceed the upper
ADC dynamic range.
E: The DCV offset causes the
input to exceed the lower
ADC dynamic range.